CN222381663U

CN222381663U - Automotive Ethernet link establishment time test device, IOP test device

Info

Publication number: CN222381663U
Application number: CN202421243502.2U
Authority: CN
Inventors: 请求不公布姓名; 陈忠明
Original assignee: Kunyi Electronic Technology Shanghai Co Ltd
Current assignee: Kunyi Electronic Technology Shanghai Co Ltd
Priority date: 2024-05-31
Filing date: 2024-05-31
Publication date: 2025-01-21
Anticipated expiration: 2034-05-31

Abstract

The application relates to a vehicle-mounted Ethernet link establishment time testing device and an IOP testing device. The system comprises a control module, a vehicle-mounted Ethernet transceiver, a power supply and a current monitoring component, wherein the vehicle-mounted Ethernet transceiver is used for being connected with a tested piece, the power supply is used for supplying power to the vehicle-mounted Ethernet transceiver and the tested piece, the current monitoring component is used for monitoring first power supply current and/or second power supply current, the first power supply current is the current for supplying power to the vehicle-mounted Ethernet transceiver, the second power supply current is the current for supplying power to the tested piece, the control module can control whether the power supply is the vehicle-mounted Ethernet transceiver and the tested piece, and the control module can also obtain the monitoring result of the current monitoring component. The application is more convenient and simpler and has higher integration level compared with the scheme of controlling the power supply by an external programmable power supply because the power supply is arranged.

Description

Vehicle-mounted Ethernet link establishment time testing device and IOP testing device

Technical Field

The application relates to the technical field of Ethernet testing, in particular to a vehicle-mounted Ethernet link establishment time testing device and an IOP testing device.

Background

With the development of the automobile industry, an automobile electrical system becomes increasingly complex, and in order to meet the communication requirements and data transmission requirements of an information entertainment system, an auxiliary driving system, an internet of vehicles and the like, requirements on automobile bus technology are increasingly high, and automobile bus is developed towards a high bandwidth direction, so that the on-board ethernet technology is gradually rising. The link establishment time test of the vehicle-mounted Ethernet is a test which is necessary for the vehicle-mounted controller, so that the vehicle-mounted controller with the Ethernet function can normally operate.

In the traditional technology, the test of the Ethernet link establishment time of the vehicle-mounted controller is realized by combining the Ethernet test equipment with an external power supply.

However, the ethernet test device of the conventional technology requires an external power source to test the ethernet link setup time of the vehicle-mounted controller, which is inconvenient to operate.

Therefore, how to test the ethernet link setup time of the in-vehicle controller is a problem that needs to be solved at present.

Disclosure of utility model

Accordingly, in order to solve the above-mentioned problems, it is necessary to provide a vehicle-mounted ethernet link establishment time test device and an IOP test device that can more conveniently test the ethernet link establishment time of a test object.

The vehicle-mounted Ethernet link establishment time testing device comprises a control module, a vehicle-mounted Ethernet transceiver, a power supply and a current monitoring component, wherein,

The vehicle-mounted Ethernet transceiver is used for being connected with a tested piece,

The power supply is used for supplying power to the vehicle-mounted Ethernet transceiver and supplying power to the tested piece through a corresponding power supply interface;

The current monitoring component is used for monitoring a first power supply current and/or a second power supply current, wherein the first power supply current is a current for supplying power to the vehicle-mounted Ethernet transceiver by the power supply, and the second power supply current is a current for supplying power to the tested piece by the power supply;

The control module can control whether the power supply supplies power to the vehicle-mounted Ethernet transceiver and the tested piece;

The control module can also obtain the monitoring result of the current monitoring component.

In one embodiment, the current monitoring assembly comprises:

The first current monitoring unit is arranged between the power supply and the vehicle-mounted Ethernet transceiver and is used for monitoring the first power supply current;

And/or:

The second current monitoring unit is arranged between the power supply and the power supply interface and is used for monitoring the second power supply current.

In one embodiment, the second current monitoring unit includes:

A plurality of current detectors, each for monitoring the second supply current, the plurality of current detectors having different current measurement ranges;

and the current sampling analog-to-digital converter is used for converting the analog current signal which is acquired by the current detector and represents the second power supply current into a digital current signal and transmitting the digital current signal to the control module.

In one embodiment, the in-vehicle ethernet link establishment time testing device further includes:

A first switch provided between the power supply and the plurality of current detectors;

The control module is used for controlling the first switch to turn on or off a path between the power supply and the plurality of current detectors.

The second switch is arranged between the plurality of current detectors and the power supply interface;

The control module is used for controlling the second switch to turn on or off the paths between the plurality of current detectors and the power supply interface.

the third switch is arranged between the power supply and the tested piece;

The control module is used for controlling the third switch to turn on or off a passage between the power supply and the tested piece.

In one embodiment, the tested piece comprises an ignition switch interface, and the vehicle-mounted ethernet link establishment time testing device further comprises a fourth switch;

The fourth switch is arranged between the power supply and the ignition switch interface;

The control module is used for controlling the fourth switch to turn on and off a passage between the power supply and the ignition switch interface.

In one embodiment, the vehicle-mounted ethernet link establishment time testing device further includes a message transceiver, where the message transceiver is configured to send and receive communication signals between the control module and the tested piece.

In one embodiment, the message transceiver is any one of a CAN transceiver, a LIN transceiver, a Flexray transceiver, an Ethernet transceiver, an RS232 module and an RS485 module.

An IOP test device comprises the vehicle-mounted ethernet link establishment time test device.

The vehicle-mounted Ethernet link establishment time testing device and the IOP testing device. By setting the power supply, the vehicle-mounted Ethernet transceiver and the tested piece can be powered, so that the subsequent test on the Ethernet link establishment time is facilitated. Through setting up the current monitoring component, can monitor first power supply current and/or second power supply current, first power supply current is the power for the on-vehicle ethernet transceiver power supply's of power current, and second power supply current is the power for the measuring piece power supply's electric current to the size of monitoring the electric current, thereby for the determination of the starting moment of ethernet connection time provides the basis, be convenient for test ethernet link establishment time. The vehicle-mounted Ethernet transceiver is connected with the tested piece, so that a basic environment for testing the building time of the vehicle-mounted Ethernet link is provided, whether the vehicle-mounted Ethernet transceiver and the tested piece build a link or not is facilitated, and the building time of the Ethernet link is determined. Whether the power supply is a vehicle-mounted Ethernet transceiver or not and whether the power supply is supplied to a tested piece or not can be controlled by the aid of the control module, monitoring results of the current monitoring assembly are obtained, and control of vehicle-mounted Ethernet link establishment time testing is facilitated. In summary, the device provided by the application can realize the operation required by the test of the vehicle-mounted Ethernet link establishment time of the tested piece, and compared with the scheme of controlling the power supply by an external programmable power supply, the device provided by the application is more convenient and simpler and has higher integration level due to the arrangement of the power supply.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments or the conventional techniques of the present application, the drawings required for the descriptions of the embodiments or the conventional techniques will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.

FIG. 1 is a schematic diagram of a vehicle-mounted Ethernet link establishment time testing device according to an embodiment;

FIG. 2 is a second schematic diagram of a vehicle-mounted Ethernet link establishment time testing device according to an embodiment;

FIG. 2a is a schematic diagram of a second embodiment of a vehicle-mounted Ethernet link establishment time testing apparatus;

FIG. 2b is a schematic diagram of a second embodiment of an on-board Ethernet link establishment time testing apparatus;

FIG. 3 is a third schematic diagram of a vehicle-mounted Ethernet link establishment time testing device according to one embodiment;

FIG. 4 is a schematic diagram of a vehicle-mounted Ethernet link establishment time testing device according to an embodiment;

FIG. 5 is a schematic diagram of an on-board Ethernet link establishment time testing device according to one embodiment;

FIG. 6 is a schematic diagram of a vehicle-mounted Ethernet link establishment time testing device according to an embodiment;

FIG. 7 is a schematic diagram of an on-board Ethernet link establishment time testing device according to an embodiment;

FIG. 8 is a schematic diagram of an on-board Ethernet link establishment time testing device according to an embodiment;

fig. 9 is a schematic diagram of a vehicle-mounted ethernet link establishment time testing apparatus according to an embodiment.

Reference numerals illustrate:

The system comprises a 10-control module, a 20-vehicle-mounted Ethernet transceiver, a 30-power supply, a 40-current monitoring component, a 50-measured piece, a 41-first current monitoring unit, a 42-second current monitoring unit, a 421-current detector, a 422-current sampling analog-to-digital converter, a 60-first switch, a 61-second switch, a 62-third switch, a 63-fourth switch and a 71-message transceiver.

Detailed Description

In order that the application may be readily understood, a more complete description of the application will be rendered by reference to the appended drawings. Embodiments of the application are illustrated in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

It will be understood that the terms first, second, etc. as used herein may be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another element.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or be connected to the other element through intervening elements. Further, "connection" in the following embodiments should be understood as "electrical connection", "communication connection", and the like if there is transmission of electrical signals or data between objects to be connected.

As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," and/or the like, specify the presence of stated features, integers, steps, operations, elements, components, or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or groups thereof.

In one embodiment, as shown in fig. 1, there is provided an in-vehicle ethernet link setup time testing apparatus comprising a control module 10, an in-vehicle ethernet transceiver 20, a power source 30, a current monitoring component 40, wherein,

The in-vehicle ethernet transceiver 20 is used for connecting with the test piece 50.

The test object 50 may be any device provided with an in-vehicle ethernet transceiver chip, and may be any one or a combination of at least two of an in-vehicle controller, a sensor, a communication device (e.g., a switch), the in-vehicle ethernet transceiver chip itself, and the like. The vehicle-mounted ethernet transceiver 20 comprises a physical layer chip of the vehicle-mounted ethernet, the vehicle-mounted ethernet transceiver 20 can be directly or indirectly connected with a tested piece through a vehicle-mounted ethernet interface to realize data interaction, in one example, the vehicle-mounted ethernet transceiver 20 can judge whether the link between the vehicle-mounted ethernet transceiver 20 and the vehicle-mounted controller is successfully established or not, and the control module 10 can directly acquire the end time of the link establishment time from the vehicle-mounted ethernet transceiver 20. Of course, in other examples, the control module 10 may also learn from the tested piece 50 whether the link is successfully established, the control module 10 may directly obtain the end time of the link establishment time from the tested piece 50, and the in-vehicle ethernet link establishment time test is one of IOP (Interoperability test), which is used to verify the reliability of the interaction between the in-vehicle controller and the in-vehicle ethernet transceiver 20, verify whether a stable link can be established between the in-vehicle ethernet transceiver 20 and the in-vehicle controller in a limited time, and is a test that is necessary for the in-vehicle ethernet verification of the in-vehicle controller, so as to ensure that the in-vehicle controller with ethernet function can work normally.

The control module 10 may include at least one of FPGA (Field Programmable GATE ARRAY ), MCU, ARM processor, etc., and the control module 10 may be connected to the on-board ethernet transceiver 20 through a switch, or may be connected to the on-board ethernet transceiver 20 through a network cable, PCIe, RS230, RS545, or other data transmission medium.

The power supply 30 is used for supplying power to the vehicle-mounted ethernet transceiver 20 and supplying power to the tested piece 50 through a corresponding power supply interface.

The power supply 30 is built in the vehicle-mounted ethernet link establishment time testing device of the present embodiment, so that an external program-controlled power supply is not needed, and further, the external program-controlled power supply is not needed to be controlled, so that the integration level is higher.

The current monitoring component 40 is configured to monitor the first supply current and/or the second supply current.

The first supply current is a current for supplying power to the vehicle-mounted ethernet transceiver 20 by the power source 30, and the second supply current is a current for supplying power to the tested piece 50 by the power source 30.

The control module 10 can control whether the power supply 30 supplies power to the vehicle-mounted ethernet transceiver 20 and the tested piece 50.

The link establishment time is understood to be a length of time from when the link is established to when the link is completed between the in-vehicle ethernet transceiver 20 and the test piece 50.

The on-board ethernet link establishment time may generally include at least three times, for example:

When the vehicle-mounted ethernet transceiver 20 stably supplies power and the tested piece 50 is not powered yet, the time required for the tested piece 50 to establish a link with the vehicle-mounted ethernet transceiver 20 after the tested piece 50 is powered on;

The tested piece 50 is stably powered, and when the vehicle-mounted Ethernet transceiver 20 is not powered yet, the time required for the tested piece 50 to establish a link with the vehicle-mounted Ethernet transceiver 20 is required after the vehicle-mounted Ethernet transceiver 20 is powered on;

In the case where both the in-vehicle ethernet transceiver 20 and the test piece 50 are stably powered, the time required for the test piece 50 to establish a link with the in-vehicle ethernet transceiver 20 after the test piece 50 is awakened.

For the tested piece 50, the stable power supply, power up and wake up of the tested piece 50 at least comprises the stable power supply, power up and wake up of the vehicle-mounted ethernet transceiver chip in the tested piece 50, in some examples, the stable power supply, power up and wake up of the tested piece 50 are limited to the stable power supply, power up and wake up of the vehicle-mounted ethernet transceiver chip of the tested piece, the power supply, power up and wake up of other circuit parts of the tested piece 50 can not be realized by the test device of the specification, in other examples, the stable power supply, power up and wake up of other circuit parts of the tested piece 50 can be realized by the test device of the specification, namely, the stable power supply, power up and wake up of the tested piece 50 are realized by the stable power supply, power up and wake up of the whole tested piece.

The stable power supply is understood to be power supply, wherein the power supply voltage and/or the power supply duration reach preset basic requirements, for example, after a switch is turned on, the power supply supplies power to an object to be powered (for example, part or all of a tested piece, and a vehicle-mounted Ethernet transceiver, for example), and the power supply is considered to stably supply power to the object to be powered when the voltage of the power supply reaches the voltage required by the object to be powered. Or the power supply can be considered to be stable to supply power to the electric object after the power supply is turned on for a period of time. The current is related to the working state of the circuit, the current of the electricity consumption object is changed along with the electricity consumption condition and the power consumption condition, when the power consumption is high, the voltage is fixed, the current is naturally high, namely, the working state of the electricity consumption object can influence the current change under the condition of fixed power supply voltage, so that when the current of the electricity consumption object reaches the starting current, the electricity consumption object is considered to start working more closely, and the link is established. Therefore, it is meaningful to use the time when the current of the electric object (for example, part or all of the tested piece, for example, the vehicle-mounted ethernet transceiver) reaches the starting current as the starting time of the link establishment time, so that the time when the link is established in the real working state can be accurately reflected.

Therefore, the control module 10 needs to control the power supply strategies (such as the above-mentioned control of stable power supply, power-up, etc., all of which are part of the power supply strategies, and the wake-up will change the power supply situation, so it can be understood as part of the power supply strategies) of the on-vehicle ethernet transceiver 20 and the tested piece 50 through the power supply 30 to implement the above-mentioned three link establishment time tests. The control module 10 performs the operations required for testing the link setup time by controlling the power supply 30 and the current monitoring component 40, and further, the calculation process of each link setup time may be performed by the control module 10 in one example, in other examples, the control module 10 may directly or indirectly feedback the start time and the end time of the link setup time to the outside, and then calculate the start time and/or the end time by a person or other devices, and in addition, the start time and/or the end time may also be directly fed back to the outside without passing through the control module 10.

The control module 10 is also capable of acquiring the monitoring result of the current monitoring assembly 40.

The control module 10 is further connected to the current monitoring assembly 40 to obtain a monitoring result of the current monitoring assembly 40.

The starting time of the link establishment time needs to be determined according to whether the first supply current or the second supply current reaches the corresponding starting current, so the control module 10 needs to acquire the monitoring result of the first supply current or the second supply current to calculate the link establishment time.

In the related conventional technology, the starting time of the link establishment time is generally determined as the power-up time and the wake-up time, for example, the time when the tested piece 50 is triggered to be powered up, and further, for example, the time when the vehicle-mounted ethernet transceiver 20 is triggered to be powered up, however, taking the triggered power-up as an example, the vehicle-mounted ethernet transceiver chip or the vehicle-mounted ethernet transceiver 20 of the tested piece 50 may not start to establish the link immediately after the triggered power-up, so the calculated link establishment time may be inaccurate, and therefore, in the embodiment, the starting time that has started to establish the link between the tested piece 50 and the vehicle-mounted ethernet transceiver 20 is accurately determined by taking the power supply current and the preset starting current as judgment bases.

The preset starting current is understood to be used to indicate that the tested piece 50 or the vehicle-mounted ethernet transceiver chip of the tested piece 50 is considered to start to establish the link when the first power supply current reaches the corresponding preset starting current, and the vehicle-mounted ethernet transceiver 20 is considered to start to establish the link when the second power supply current reaches the corresponding preset starting current.

The preset starting current value can be preset and can also be measured through limited experiments, in one example, when the vehicle-mounted Ethernet physical layer chip (such as a vehicle-mounted Ethernet transceiver of the testing device, a vehicle-mounted Ethernet transceiver chip of the tested piece and the like) leaves the factory, the starting current can be preset, and the device can be adjusted and used.

In this embodiment, by setting the power supply 30, the power can be supplied to the vehicle-mounted ethernet transceiver 20 and the tested piece 50, so that the subsequent test on the ethernet link establishment time is facilitated. By providing the current monitoring component 40, the first power supply current and/or the second power supply current can be monitored, the first power supply current is the current that the power supply 30 supplies power to the vehicle-mounted ethernet transceiver 20, and the second power supply current is the current that the power supply 30 supplies power to the tested piece 50, so that the magnitude of the current can be monitored, the starting time of the ethernet link establishment time can be determined, and the ethernet link establishment time can be tested conveniently. By arranging the on-vehicle Ethernet transceiver 20 to be connected with the tested piece 50, a basic environment for the on-vehicle Ethernet link establishment time test is provided, and whether the on-vehicle Ethernet transceiver 20 and the tested piece 50 establish a link or not is convenient to determine the establishment time of the Ethernet connection. By setting the control module 10, it is able to control whether the power supply 30 supplies power to the vehicle-mounted ethernet transceiver 20 and the tested piece 50, and acquire the monitoring result of the first power supply current and/or the second power supply current, so as to facilitate control and data analysis of the vehicle-mounted ethernet link establishment time test. In summary, the device provided in this embodiment can implement operations required for the vehicle-mounted ethernet link establishment time test of the tested piece 50, thereby being more convenient and simple.

In one embodiment, as shown in fig. 2, 2a, 2b, the current monitoring assembly 40 comprises a first current monitoring unit 41 and/or a second current monitoring unit 42, wherein:

The first current monitoring unit 41 may be disposed between the power supply 30 and the on-vehicle ethernet transceiver 20, for example, a first end of the first current monitoring unit 41 is connected to the power supply 30, a second end of the first current monitoring unit 41 is connected to the on-vehicle ethernet transceiver 20, and the first current monitoring unit 41 is configured to monitor the first supply current.

The second current monitoring unit 42 may be disposed between the power source 30 and the power supply interface, for example, a first end of the second current monitoring unit 42 is connected to the power source 30, a second end of the second current monitoring unit 42 is connected to the tested piece 50 through a corresponding power supply interface, and the second current monitoring unit 42 is configured to monitor the second power supply current.

The current monitoring assembly 40 in fig. 2 includes a first current monitoring unit 41 and a second current monitoring unit 42. The current monitoring assembly 40 in fig. 2a comprises a first current monitoring unit 41. The current monitoring assembly 40 in fig. 2b comprises a second current monitoring unit 42.

In the present embodiment, by providing the first current monitoring unit 41, the effect of monitoring the first power supply current is achieved. By providing the second current monitoring unit 42, the effect of monitoring the second supply current is achieved. So that the control module 10 can obtain the monitoring results of the first supply current and the second supply current.

In one embodiment, as shown in FIG. 3, the second current monitoring unit 42 includes a plurality of current detectors 421, a current sampling analog-to-digital converter 422, wherein:

Each current detector 421 is configured to monitor a second supply current, for example, a first end of the current detector 421 is connected to the power source 30, and a second end of the current detector 421 is connected to the tested piece 50 through a corresponding supply interface.

Wherein the current measurement ranges of the plurality of current detectors 421 are different. For example, 0-2A, 2-10A, 0-5A, 0-20A, etc., the corresponding activation currents may be different due to different test pieces 50. Therefore, a suitable current detector 421 needs to be selected to more accurately measure the second supply current, and the current detector 421 needs to be selected according to actual requirements.

Specifically, the principle of switching different current detectors in this embodiment so as to match starting currents of different magnitudes and improve the detection accuracy of the second supply current is described below:

First, each current detector has its own preset range, e.g., one current detector range is 0-5A and the other is 0-20A, and it can be seen that the range is from 0-maximum.

On this basis, the range of the start-up current for detection may be allocated in advance for each current detector, and if the start-up current is in the range of 0 to 2A, the current detector a is used to detect the supply current, and if the start-up current is in the range of 2 to 5A, the current detector B is used to detect the supply current, so that the current detector needs to be selected according to which range the start-up current falls in. First, it is ensured that the starting current falls within the interval of the current detector.

Therefore, as long as a sufficiently large-scale current detector is selected, it is natural to meet the measurement requirement, and the problem of measurement accuracy (sensitivity) is referred to herein as the reason why the different current detectors are switched in this embodiment, when the starting current falls within the interval of two current detectors at the same time, the current detector with higher sensitivity is selected to measure the starting current. The sensitivity refers to the reaction capability to micro-current, in general, the sensitivity of a current detector with a larger measuring range is lower, and the sensitivity of a current detector with a smaller measuring range is higher, and the sensitivity can be understood that the large-measuring range current detector can not detect the variation of 0.01A, the small-measuring range current detector can detect the variation of 0.01A, for example, the starting current is 1A, when the current changes from 0.9A to 0.98A, the large-measuring range current detector cannot distinguish 0.98A from 1A, the large-measuring range current detector can be considered to be 1A, the small-measuring range current detector can be considered to be not 1A, and the difference of the two can lead to more accurate starting current value detected by the small-measuring range current detector, so that the starting time of the obtained link establishment time is more accurate. In addition, the greater the accuracy of the current detector, the greater the sensitivity, so the corresponding measuring interval range can be allocated according to the measuring range and accuracy of different current detectors, for example, two current detectors are taken as an example, the minimum value of the interval range allocated by the wide-range current detector is larger than the maximum value of the interval range allocated by the small-range current detector, when the starting current is relatively large, the wide-range current detector is required to be used, which is equivalent to sacrificing the sensitivity, but the starting current can be measured, and when the starting current is relatively small, the small-range current detector can be used for guaranteeing the measuring accuracy.

The second current monitoring unit 42 is configured to measure whether the second power supply current of the tested piece 50 reaches the start current, so as to determine whether the tested piece 50 works, and the power supply current needs to be measured to determine the starting time of the ethernet link establishment time because the current of the tested piece 50 needs to reach the start current before the tested piece starts to work.

Since the first current monitoring unit 41 monitors the first supply current, and the first supply current is used to determine whether the power supplied by the on-board ethernet transceiver 20 reaches the start current, and because the on-board ethernet transceiver 20 is built in the device, the start current is known and fixed, the first current monitoring unit 41 can select the current detector 421 with a suitable range in advance without switching.

In an example, since the on-board ethernet transceiver 20 in the apparatus of the present disclosure is known and fixed, it is not necessary to switch the different current detectors 421 according to different requirements, so the preset starting current corresponding to the starting current requirement information may refer to the starting current requirement information of the tested piece.

The starting current demand information can be a value or a value range corresponding to a preset starting current, or can be other information used for determining the value or the value range, such as starting current grade information or parameter information (such as model information) of a vehicle-mounted Ethernet transceiver chip in the tested piece, and further, the preset starting current value corresponding to the tested piece can be determined according to a mapping relation between pre-stored different parameter information and different preset starting current values.

The starting current demand information may be sent by the tested piece to the testing device of the specification, and then obtained by the control module, in one example, the control module may obtain the starting current demand information from the tested piece through the message transceiver module, for example, may use the CAN transceiver as the message transceiver module, and obtain the starting current demand information from the tested piece based on the CAN bus.

The current sampling analog-to-digital converter 422 may be respectively connected to the plurality of current detectors 421 and the control module 10, and is configured to convert the analog current signal representing the second supply current acquired by the current detectors 421 into a digital current signal, and transmit the digital current signal to the control module 10.

In this embodiment, by providing a plurality of current detectors 421 and current sampling analog-to-digital converters 422, different current detectors 421 can be selectively switched according to the actual starting current of the tested piece 50, so that starting currents with different magnitudes can be matched, the monitoring precision of the second power supply current is improved, and the testing precision of the ethernet link establishment time is further improved.

In one embodiment, as shown in fig. 4, the on-board ethernet link setup time testing apparatus further includes a first switch 60. The first switch 60 is disposed between the power source 30 and the plurality of current detectors 30, for example, a first end of the first switch 60 is connected to the power source 30, a second end of the first switch 60 is connected to the plurality of current detectors 421, and a control end of the first switch 60 is connected to the control module 10.

The control module 10 is configured to control the first switch 60 to turn on or off a path between the power supply 30 and the plurality of current detectors 421.

In the present embodiment, by providing the first switch 60, the control module 10 can select which current detector 421 the power supply 30 is turned on to the effect of switching the current detector 421 by controlling the first switch 60 to turn on or off the path between the power supply 30 and the current detector 421.

In one embodiment, as shown in fig. 5, the on-board ethernet link establishment time testing apparatus further comprises a second switch 61. The second switch 61 is disposed between the plurality of current detectors and the power supply interface, for example, a first end of the second switch 61 is connected to the plurality of current detectors 421 respectively, a second end of the second switch 61 is connected to the measured piece 50 through the corresponding power supply interface, and a control end of the second switch 61 is connected to the control module 10.

The control module 10 is configured to control the second switch 61 to turn on or off the paths between the plurality of current detectors 421 and the measured piece 50.

The second switch 61 is connected to one power supply pin of the tested piece 50, for example, the second switch 61 is connected to the KL30 power supply pin of the tested piece 50. The electric appliance on the automobile is usually powered by two paths of power supply loops, namely a KL30 pin and a KL15 pin, wherein the KL15 pin is generally considered to be connected with a key ignition signal, and the KL30 pin is connected with a storage battery for power supply.

In the present embodiment, by providing the second switch 61, the control module 10 can select which current detector 421 is turned on by controlling the second switch 61 to turn on or off the path between the current detector 421 and the measured member 50, thereby achieving the effect of switching the current detector 421.

In one embodiment, as shown in FIG. 6, the in-vehicle Ethernet link establishment time testing apparatus further comprises a third switch 62. The third switch 62 is disposed between the power source 30 and the tested piece 50, and a control terminal of the third switch 62 is connected to the control module 10 (not shown in the figure).

The control module 10 is configured to control the third switch 62 to turn on or off a path between the power source 30 and the measured piece 50.

In the present embodiment, by providing the third switch 62, the control module 10 can control whether the power supply 30 supplies power to the measured piece 50 by controlling the third switch 62 to turn on or off the path between the power supply 30 and the measured piece 50.

In one embodiment, as shown in fig. 7, the tested piece 50 includes an ignition switch interface, and the on-board ethernet link setup time testing apparatus further includes a fourth switch 63.

The fourth switch 63 is disposed between the power supply 30 and the ignition switch interface, for example, a second end of the fourth switch 63 is connected to the ignition switch interface, and a control end of the fourth switch 63 is connected to the control module 10 (not shown).

As shown in fig. 8, the on-vehicle ethernet link establishment time testing device includes a third switch 62 and a fourth switch 63, for example, a first end of the third switch 62 is connected to the power source 30, and a second end of the third switch 62 is connected to a first end of the fourth switch 63 and a first end of the second current monitoring unit 42, respectively.

A second terminal of the fourth switch 63 is connected to the ignition switch interface, and a control terminal of the fourth switch 63 is connected to the control module 10 (not shown).

The fourth switch 63 is connected to an ignition switch interface of the tested piece 50. The electric appliance on the automobile is usually composed of two paths of power supply loops, namely a KL30 pin and a KL15 pin, wherein the KL15 pin is generally considered to be connected with a key ignition signal, the KL30 pin is connected with a storage battery for supplying power, and an ignition switch interface is the KL15 pin.

The control module 10 is used for controlling the fourth switch 63 to turn on and off the path between the power supply 30 and the ignition switch interface.

In this embodiment, by providing the fourth switch 63, the control module 10 may control whether the power source 30 supplies power to the ignition switch interface of the tested piece 50 by controlling the fourth switch 63 to be turned on or off, so as to trigger an ignition signal.

In addition, a fifth switch may be further disposed between the power supply 30 and the vehicle-mounted ethernet transceiver 20, and the control module is configured to control the fifth switch to turn on or off a path between the power supply and the vehicle-mounted ethernet transceiver 20, so as to control whether the vehicle-mounted ethernet transceiver 20 is powered on or not.

The control module may be connected to the power supply 30 to control whether it supplies power to the tested piece 50 and/or the vehicle-mounted ethernet transceiver 20, or may control whether the power supply 30 supplies power by controlling a corresponding switch (e.g., at least one of the third switch, the first switch, the second switch, the fifth switch, etc.).

In one embodiment, as shown in fig. 9, the on-board ethernet link establishment time testing apparatus further includes a report Wen Shoufa unit 71. The report Wen Shoufa unit 71 is used for receiving and transmitting communication signals between the control module 10 and the measured piece 50, for example, a first end of the report Wen Shoufa unit 71 is connected with the control module 10, and a second end of the report Wen Shoufa unit 71 is connected with the measured piece 50.

The control module 10 directly sends a wake-up signal to the tested piece 50 through the report Wen Shoufa device 71 to wake up the tested piece 50, thereby facilitating the realization of the test of the link establishment time.

The report Wen Shoufa unit 71 may be a transceiver of a controller area network bus (Controller Area Network, CAN), and may implement the transmission and reception of CAN signals. In other examples, the report Wen Shoufa unit 71 may be any one of a Flexray transceiver, a LIN transceiver, an RS232 module, an RS485 module, another ethernet transceiver dedicated for communication (may be a normal ethernet transceiver, or may be another in-vehicle ethernet transceiver other than the in-vehicle ethernet transceiver 20), and the like.

The control module 10 wakes up the tested piece through the ignition switch interface or the message transceiver 71, the electric appliances on the automobile are usually two paths of power supply loops, namely a KL30 pin and a KL15 pin, which are generally considered as KL15 pin connected with a key ignition signal, KL30 pin connected with a storage battery for supplying power, the report Wen Shoufa device 71 adopts a CAN transceiver as an example, the report Wen Shoufa device 71 is connected with the tested piece through a CAN bus, and the control module 10 CAN send a wake-up signal to the tested piece through the report Wen Shoufa device 71 through the CAN bus to wake up the tested piece. The control module 10 outputs a wake-up signal by controlling the ignition switch interface, so that the key ignition signal can be simulated, and at the moment, the ignition switch interface of the tested piece is connected with the key ignition signal, and the tested piece is waken up.

In this embodiment, the control module 10 is directly connected to the tested piece 50 through the alarm Wen Shoufa device 71, so that a wake-up signal can be directly sent to the tested piece 50 to wake up the tested piece 50, and also can be wake up through an ignition switch interface.

Based on the same inventive concept, the embodiment of the invention also provides an IOP test device. The IOP test device comprises any one of the vehicle-mounted ethernet link establishment time test devices provided by the embodiment. Therefore, the IOP test device also has the advantages of the vehicle-mounted ethernet link-establishing time test device in the above embodiment, and the same points can be understood by referring to the explanation of the vehicle-mounted ethernet link-establishing time test device, and will not be repeated herein.

In the description of the present specification, reference to the terms "some embodiments," "other embodiments," "desired embodiments," and the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic descriptions of the above terms do not necessarily refer to the same embodiment or example.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. The vehicle-mounted Ethernet link establishment time testing device is characterized by comprising a control module, a vehicle-mounted Ethernet transceiver, a power supply and a current monitoring component, wherein,

2. The on-board ethernet link setup time testing apparatus of claim 1, wherein said current monitoring component comprises:

And/or:

3. The on-board ethernet link setup time testing apparatus of claim 2, wherein said second current monitoring unit comprises:

4. The in-vehicle ethernet link setup time testing apparatus according to claim 3, further comprising:

5. The in-vehicle ethernet link setup time testing apparatus according to claim 3, further comprising:

6. The in-vehicle ethernet link setup time testing apparatus according to claim 1, wherein said in-vehicle ethernet link setup time testing apparatus further comprises:

the third switch is arranged between the power supply and the tested piece;

7. The on-vehicle ethernet link setup time testing device according to claim 1, wherein the tested piece comprises an ignition switch interface, and the on-vehicle ethernet link setup time testing device further comprises a fourth switch;

The control module is used for controlling the fourth switch to turn on or off a passage between the power supply and the ignition switch interface.

8. The in-vehicle ethernet link setup time testing apparatus of claim 1, further comprising a message transceiver for transceiving communication signals between the control module and the device under test.

9. The device for testing the time for establishing the vehicle-mounted Ethernet link according to claim 8, wherein the message transceiver is any one of a CAN transceiver, a LIN transceiver, a Flexray transceiver, an Ethernet transceiver, an RS232 module and an RS485 module.

10. An IOP test device comprising the in-vehicle ethernet link establishment time test device of any one of claims 1-9.